C13. Carbonates Flashcards Preview

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Flashcards in C13. Carbonates Deck (6)
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1

What is limestone?

Calcium carbonate
Sedimentary rock
CaCO(3)

2

What is thermal decomposition?

When the molecule breaks apart on heating
CaCO(3) -> CaO + CO(2)

3

Name the characteristics of all carbonates.

- Have the carbonate ion CO(3)2-
- All decompose on heating to produce the oxide and carbon dioxide
(Except potassium carbonate and sodium carbonate)
- Reacts with acids to produce a salt, carbon dioxide and water

4

What are the uses of limestone?

- Neutralises acids in soil, factory waste and acid gases from power stations

5

What is 'lime'?

Calcium oxide

6

How do we manufacture lime from limestone?

We heat limestone strongly and it breaks down into calcium oxide, which is lime (thermal decomposition)